Magma

Magma Ohishi Toishi 3000/8000 Grit Combination Waterstone

4.5 (45 reviews)

Achieve a Razor-Sharp Edge with the Magma Ohishi Japanese Toishi WaterstoneThe Magma Ohishi Japanese Toishi Waterstone is a premium sharpening stone designed to achieve a perfectly sharpened blade. This combination grain stone is favored by craftsmen for its quality and effectiveness in honing Ja...

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*Price sourced from Amazon.com. Last updated:Jul 13, 2026.Price and availability are subject to change.

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Overview

Achieve a Razor-Sharp Edge with the Magma Ohishi Japanese Toishi Waterstone

The Magma Ohishi Japanese Toishi Waterstone is a premium sharpening stone designed to achieve a perfectly sharpened blade. This combination grain stone is favored by craftsmen for its quality and effectiveness in honing Japanese edge tools, knives, and razors.

Specifications:

  • Brand: Magma
  • Model: Ohishi Japanese Toishi Waterstone
  • Type: Combination Waterstone
  • Grain: 3000/8000
  • Dimensions: 8.07 x 2.95 x 1.18 inches
  • Weight: 2 lbs
  • Application: Sharpening and Honing

Key Features

Grain 3000/8000 Combination, 8.07x 2.95 x 1.18 Inch, Weight: 2 lbs

Japanese Premium Whetstone, Grindingstone, Knifesharpener, Sharpening stone

The 3 inches width is very useful when honing wide plane blades, knives or cut throat razors.

Original Japan product

Specifications

Brand
Magma
Model
Ohishi Toishi
Grit Combination
3000/8000
Dimensions
8.07 x 2.95 x 1.18 Inch
Weight
2 lbs
Origin
Japan
Type
Combination Waterstone
Function
Knifesharpener, Sharpening stone, Grindingstone

Pros & Cons

👍 Pros

  • This Magma Ohishi Toishi waterstone features a dual grit combination of 3000/8000, allowing for both refinement and mirror-polishing of edges.
  • With its substantial dimensions of 8.07 x 2.95 x 1.18 inches, it provides a generous surface area for sharpening various tools.
  • The 3-inch width is particularly useful for honing wide blades like plane blades, knives, or even cut-throat razors effectively.
  • This is an original Japan product, suggesting adherence to traditional quality standards for sharpening stones.
  • At 2 lbs, its weight indicates a solid and stable platform during the sharpening process.

👎 Cons

  • As a waterstone, it requires soaking before use and proper drying and storage to prevent damage, adding to maintenance.
  • The 3000/8000 grit combination is suitable for fine finishing, but a coarser stone would be needed for repairing very dull or damaged edges.
  • The product description does not specify if a base or stand is included, which might be necessary for stable use.
  • Being a natural or synthetic stone that wears down, it will eventually require flattening to maintain a consistent sharpening surface.

Frequently Asked Questions

The 3000 grit is excellent for refining an edge and preparing it for polishing, while the 8000 grit provides a very fine, almost mirror-like finish, ideal for exceptionally sharp blades.
Yes, as a waterstone, it typically requires soaking in water before use to ensure the abrasive particles are effective and to create the necessary slurry for sharpening.
No, the 3000/8000 grit combination is for refining and polishing; for very dull or chipped knives, you would need a coarser grit stone (e.g., 400-1000) to re-establish the edge first.
The generous 3-inch width of this stone is particularly useful for providing a stable and ample surface, especially when honing wider blades like plane irons or chef's knives, ensuring consistent contact.
The product description does not specify the inclusion of a base or stand; typically, these are purchased separately to provide stability and elevation during sharpening.